| ETAP | Earn to Answer Program 
| Others |
| ETAP | Eastern Trough Area Project
| Others |
| ETAP | Educational Theory And Practice
| Others |
| ETAP | Electrical Transient Analysis Program
| Others |
| ETAP | Electrical Transient Analyzer Program
| Others |
| ETAP | Electrical Transient and Analysis Program
| Others |
| ETAP | Electronic Teaching Assistance Program
| Others |
| ETAP | Employee Telephone Access Program
| Others |
| ETAP | Encore Theatrical Arts Project
| Others |
| ETAP | Energy Technology and Policy
| Others |
| ETAP | Energy Technology Assistance Program
| Others |
| ETAP | Enroute Traffic Analysis Program
| Others |
| ETAP | Entrepreneurial Technology Apprenticeship Program
| Others |
| ETAP | Entreprenuerial Technology Apprenticeship Program
| Others |
| ETAP | Environmental Technologies Action Plan
| Others |
| ETAP | Estacion de Tratamiento de Agua Potable
| Others |
| ETAP | European Technology Acquisition Programme
| Others |
| ETAP | European Training Assessment Programme
| Others |
| ETAP | Experimental and Theoretical Advances in Prosody
| Others |
| ETAP | Experts in Technology and Policy
| Others |
| ETAP | Teaching Assistance Program
| Others |